42 providing temporary use of on-line non-downloadable software for accessing, reading, and tracking information contained in clinical records, patient registries, medical device registries, pharmaceutical registries, patient consents, living wills, physician credentials, procurement, supply chains, logistics data, real estate records and transactions, business contracts, document execution, images, design specifications, images captured by drones, satellite images, all using block chain technology; software as a service (saas) services featuring software using artificial intelligence to compile, analyze and interpret clinical records, patient registries, medical device registries, pharmaceutical registries, patient consents, living wills, physician credentials, supply chains, logistics data and real estate records and transactions, business contracts, document execution, images, design specifications, images captured by drones, satellite images; authentication of data in the field of clinical records, patient registries, medical device registries, pharmaceutical registries, patient consents, living wills, and physician credentials, procurement, supply chains, logistics and real estate records and transactions, business contracts, document execution, images, design specifications, images captured by drones, satellite images, all using block chain technology; software as a service (saas) services featuring software using artificial intelligence and machine learning to compile, analyze and interpret clinical records, patient registries, medical device registries, pharmaceutical registries, patient consents, living wills, physician credentials, supply chains, logistics data and real estate records and transactions, business contracts, document execution, images, design specifications, images captured by drones, satellite images